Chocolate Filling For Wedding Cake

I have a bride that wants chocolate cake, chocolate filling, and covered in white fondant. That's fine but my chocolate filling I am not to pleased with. It's run its course so to speak. I want something really good for her cake. I have seen a lot of great recipes in the files but could you guys recommend one. I know they are all great but I need pointed in the right direction. I have received so many great tips from here, so point me and I will go LOL Thanks in Advance Kathy

Place cream, butter and sugar in medium saucepan and cook over medium-low heat, stirring, until the butter melts and the sugar dissolves. Increase heat and cook until just before the mixture comes to a boil. Remove from heat and pour hot mixture over chopped chocolate. Let stand for 3 minutes to melt the chocolate. Stir gently until smooth and well blended. Refrigerate until cold and firm, at least 6 hours